import java.util.Scanner;

public class yuanchanng2 {
    public static void main(String[] args) {
        yuanchang1 f = new yuanchang1();
        Scanner a = new Scanner(System.in);
        System.out.println("请输入圆的半径：");
        float b = a.nextFloat();
        f.A(b);
        Scanner c = new Scanner(System.in);
        System.out.println("请输入长方形的长：");
        int d = c.nextInt();
        Scanner e = new Scanner(System.in);
        System.out.println("请输入长方形的短：");
        int g = e.nextInt();
        f.B(d,g);

    }

}